The question Meddig? has a meaning for time (How long?) and place (How far?).

Meddig mész még?How far are you going?

That is Meddig? = How long? How far?

To express a limit for a distance, the suffix -ig is used, which refers to time and place, and has one form only. If you want to say ’From when to when?’ or ’From where to where?’, then the suffixes –tól, -től are used with -ig.